13.0 Issue

I have small project that i create in UE 4.7.1. So when 4.12.4 version released i update my project to new version successfully and all stuff worked well. But unfortunately when i update this project to 4.13.0 version i have this bug:

Paint-material for landscape works OK, and i don’t understand how to solve that problem.

Have you tried opening and clicking save to rebuild the master landscape material?

Yes, material shown as it must be but landscape black and nothing changes. Also if i choose basic material from starter pack it shown correctly:

I try to re-create this material from beginning and have same result.

So, no ideas anyone?